scholarly journals STUDY ON BRITTLE FRACTURE OF WELDED JOINT WITH WELD DEFECTS BASED ON LOCAL FRACTURE APPROACH

2006 ◽  
Vol 71 (610) ◽  
pp. 169-176 ◽  
Author(s):  
Tadao NAKAGOMI ◽  
Yusuke TATSUMI
Keyword(s):  
Brittle Fracture ◽  
Welded Joint ◽  
Local Fracture ◽  
Weld Defects

scholarly journals Effects of temperature on the local fracture toughness behavior of Chinese SA508-III welded joint

2020 ◽  
Vol 52 (8) ◽  
pp. 1732-1741
Author(s):  
Xiangqing Li ◽  
Zhenyu Ding ◽  
Chang Liu ◽  
Shiyi Bao ◽  
Hao Qian ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Welded Joint ◽  
Local Fracture ◽  
Effects Of Temperature

Fracture Assessment of Welded Joint With Geometrical Discontinuity Using the Weibull Stress

2006 ◽  
Author(s):  
Satoshi Igi ◽  
Takahiro Kubo ◽  
Masayoshi Kurihara ◽  
Fumiyoshi Minami
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Welded Joint ◽  
Fracture Toughness Test ◽  
Geometrical Condition ◽  
Stress Criterion ◽  
Toughness Test ◽  
Fracture Assessment ◽  
Geometrical Discontinuity ◽  
Weibull Stress

Recently the Weibull stress is used as a fracture driving force parameter in fracture assessment. The Weibull stress is derived from a statistical analysis of local instability of micro cracks leading to brittle fracture initiation. The critical Weibull stress is expected to be a critical parameter independent of the geometrical condition of specimens. Fracture toughness test using 3-point bending and tensile tests of welded joint specimens with geometrical discontinuity were conducted in order to study the applicability of fracture assessment procedure based on Weibull stress criterion. Steel plates prepared for this study had tensile strength of 490 MPa for structural use. Two kinds of welded joint specimens, “one-bead welded joint” and “multi-pass welded joint” were prepared for fracture toughness test by using gas metal are welding. In tensile test specimen, corner flaws were introduced at the geometrical discontinuity part at where stress concentration is existed. Three dimensional elastoplastic finite element analyses were also carried out using the welded joint specimen models in order to calculate the Weibull stress. The critical loads for brittle fracture predicted by the Weibull stress criterion from CTOD test results of one-bead and multi-pass welded joint specimens show fairly good agreement with experimental results of welded joint specimens with geometrical discontinuity.

scholarly journals Strength of welded joint sunder quasi -brittle fracture

2020 ◽  
Vol 1441 ◽  
pp. 012114
Author(s):  
M V Shakhmatov ◽  
E A Usmanova
Keyword(s):  
Brittle Fracture ◽  
Welded Joint

scholarly journals EXPERIMENTAL STUDY ON THE BRITTLE FRACTURE OF BEAM-TO-COLUMN WELDED JOINT WITH END-TAB AND BACKING STRIP

1983 ◽  
Vol 334 (0) ◽  
pp. 58-69
Author(s):  
MORIHISA FUJIMOTO ◽  
TADAO NAKGOMI ◽  
JONGRAK KIM ◽  
MASAYASU TAGA
Keyword(s):  
Experimental Study ◽  
Brittle Fracture ◽  
Welded Joint
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